Machine Alarm Error & Message:

Fanuc's Alarm Description: A spindle amplifier alarm occurred in a system with a serial spindle. The alarm is indicated as

Additional Suggestions & Alarm Clarification:
None currently

Help Others:
Post troubleshooting recommendations for (Fanuc alarm: 409 - SPINDLE ALARM DETECTION) error message below.

Fanuc CNC Control Models Applicable:
, 0/00/0-mate,

Manufacturing | Industrial | CNC machinist | Maintenance | Repair | Machinery | Bearings

I have a Hardinge VMC 1000 II

I have a Hardinge VMC 1000 II that is currently experiencing problems with a 409 alarm, still trying to troubleshoot. Alarm occurs after long periods at high spindle speeds. Seems to possibly be heat related.

Categories of 409 Alarm

409 AL-01 Motor overheat
409 AL-02 Excessive velocity error
409 AL-03 DC link fuse blown
409 AL-04 Input power supply open phase and power supply failure
409 AL-07 Overspeed
409 AL-09 Main circuit overload
409 AL-11 07 DC link overvoltage
409 AL-12 DC link overcurrent/IPM alarm
409 AL-15 Speed range switching and spindle switching alarm
409 AL-26 Cs contouring control velocity detection signal disconnected
409 AL-27 Position coder signal disconnected
409 AL-28 Cs contouring control position detection
signal disconnected

409 AL-29 Short-period overload
409 AL-30 PSM main circuit overcurrent
409 AL-31 Speed detection signal disconnected and
motor lock alarm

409 AL-33 05 DC link precharge failure
409 AL-34 Parameter data out of specification
409 AL-35 Too large gear ratio specified
409 AL-36 Error counter overflow
409 AL-37 Speed detector parameter error
409 AL-39 Cs contouring control one-rotation signal
detection error

409 AL-40 Cs contouring control one-rotation signal
not detected

409 AL-41 Position coder one-rotation signal
detection error

409 AL-42 Position coder one-rotation signal not

409 AL-43 Differential speed mode position coder
signal disconnected

409 AL-44 A/D conversion error
409 AL-46 Position coder one-rotation signal
detection error during thread cutting

409 AL-47 Position coder signal error
409 AL-49 Excessive differential speed conversion

409 AL-50 Excessive speed command computed
value during the synchronization control of
the spindle

409 AL-51 04 DC link undervoltage
409 AL-52 ITP signal error I
409 AL-53 ITP signal error II
409 AL-54 Overload current alarm
409 AL-55 Power line state error at spindle or speed
range switching

409 AL-56 Control circuit cooling fan stopped
409 AL-57 Excessive regenerated power
409 AL-58 PSM main circuit overload
409 AL-59 PSM cooling fan stopped

409 AL 51 04DC link under voltage

How to solve

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.